390396820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{353}}^1\times {\mathrm{457}}^1$

素因数の和:841

約数の個数: 72

約数和(自身を含む): 905669352

約数和(自身を除く): 515272532

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 353, 457, 484, 605, 706, 914, 1210, 1412, 1765, 1828, 2285, 2420, 3530, 3883, 4570, 5027, 7060, 7766, 9140, 10054, 15532, 19415, 20108, 25135, 38830, 42713, 50270, 55297, 77660, 85426, 100540, 110594, 161321, 170852, 213565, 221188, 276485, 322642, 427130, 552970, 645284, 806605, 854260, 1105940, 1613210, 1774531, 3226420, 3549062, 7098124, 8872655, 17745310, 19519841, 35490620, 39039682, 78079364, 97599205, 195198410, 390396820]

約数ペア:

[(1, 390396820), (2, 195198410), (4, 97599205), (5, 78079364), (10, 39039682), (11, 35490620), (20, 19519841), (22, 17745310), (44, 8872655), (55, 7098124), (110, 3549062), (121, 3226420), (220, 1774531), (242, 1613210), (353, 1105940), (457, 854260), (484, 806605), (605, 645284), (706, 552970), (914, 427130), (1210, 322642), (1412, 276485), (1765, 221188), (1828, 213565), (2285, 170852), (2420, 161321), (3530, 110594), (3883, 100540), (4570, 85426), (5027, 77660), (7060, 55297), (7766, 50270), (9140, 42713), (10054, 38830), (15532, 25135), (19415, 20108)]